Safety gripping mechanism for elevators.



C. FAK.

SAFETY GRIPPING MECHANISM FOR ELEVATORS.

APPLICATION FILED APR. 16. 19.15.

1,178,505. I Patented Apr. 11, 1916.

2 ,9, 2 SHEETS-SHEET 1.

WITNESSES INVENTOH w ATTORNEY m5 COLUMBIA PLANOGRAPH p0 WASHINGTON, D. c.

c. FAK. SAFETY GRIPPING MECHANISM FOR ELEVATORS.

' APPLICATION. FILED APR.16; 1915. 1,178,505.

Patented Apr. 11, 1916.

2 SHEETS-SHEET 2.

INVENTOR My 1V ATTORNEY} WITNESSES 57M (7 THE COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

CIRIL FAK, or AHMEEK, ivnoniean.

SAFETY enlrrine MECHANISM roe ELEVATORS.

masses.

Specification of Letters Patent. Patented A 1 11 1Q16 Application filed April 16, 1915. Serial No. 21,738..

To all whom it may concern Be it known that I, OIRIL FAK, a subject of the King of .Hungary,zresiding at Ahmeek, in the county of Keweenaw' and State of Michigan, have invented certain new'and useful Improvements in Safety Gripping Mechanism'for Elevators, of which the following is a specification. Y r

This inventionrelate's to asafety gripp ng mechanism for elevators, more particularly mine cars, and has for its object to provlde a device of the class referred to, primarily designed for use in connection with a mine car traveling upon an inclined track and controlled by a pulling .cable, with means in' a manner as hereinafter set forth for gripping the track rails'to retard movement of the car when the pulling cable becomes slack.

Further objects of the invention are to provide a safety gripping mechanlsm for the purpose set forth which is simple in its construction and arrangement, strong, durable, efficient and convenient in its'use, readily set up and comparatively inexpensive. I

With the foregoing and other 'objects in view the invention consistsof the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it isto be understood that changes, variations-and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote 7 corresponding parts throughout the several views :-Figure '1 is a side elevation showing the adaptation of a safety gripping mechanism in accordance withthis invention in connection with a car traveling upon track rails,.the latter being broken away. Fig. 2 is a front elevation view, broken away. Fig. 3 is a front elevation of the safety gripping mechanism. Fig. 4 is a cross sectional View on llne Fig. 5 is an inverted plan. Fig.6 is arsection on line Y-Y, Fig. 3. A

Referring to the drawings in detail 1 and 2 denote a pair of rails forming atrack and upon which are adapted to travel the wheels 3 of a car 4. By way of example the latter is shown as provided with seats for miners to sit upon when they are. lowered 1nto a mine. The seats are indicated at 5 and hand rails at 6.

The sides of the car have j ournaled therein a pa1r of grooved pulleys 7 these latter are parallel to the front and back sides and at; right angles looking down upon the car.

Traveling. over said pulleys are flexible members 8, which are oppositely-disposed with respect to each other and in, theform of chains. Each of the members 8is pro- .vided at one end with a .pair ofbranches 9 and at. the other ends are connected-to a link 10, carried by a connecting bar 11, which slides through a transverse member 12'form ing an element of the car body, and further slides over a guide 13 carried by a transverse member 14 forming .an element of the car body. Pivotally attached to the connecting bar 11, as at 15, is a coupling bar 16, which is connected to an elevating and lowering cable 17.

Secured to each side of the, car 4 and dependingtherefrom is a casing 18 and the ,means for securing each of the casings to each side of the car isindicated at 19. The

casing 18 is cut-away as at 20 to provide seats for the heads 21 of longitudinally eX- tending wedge-shaped gripping blocks 22,

23, each having grooves 24 and tongues 25.

The formerreceives ridges 26 carried by the inner faces of'the side walls of the casing 18 and the tongues 25 extend into pockets 27 formed in the inner faces of the side walls of "the casing 18. The lower ends of each pair of gripping members 22 haveinwardly 6X7 tending flanges 28 which are arranged below the heads of the rails 1, 2, and the said gripping members 22 normally are clear of engagement ofthe rails 1, 2, during the travel of the car, but if the elevating and lowering member 17 becomes slack, the gripping members are forced into engagement by the track rails frictionally engaging said track rails to retard movement of the car 4:. Each pair of gripping members 22 is spaced apart by coil" springs 29. The heads 21 of the gripping members are formed of cylindrical bars which project from each'end of the casing 18 and the heads 21 at one-end extend through .a yoke-shaped guide member 30 and. interposed between said member 30 and the casing 18 and surrounding the headsv 21 are coil springs 31. The heads 20 at theirother end carry-coil springs 32 which are interposed between the casingv 18 and'collars 33 fixed to said-heade The function, of the springs 31,32 is to force the gripping members 22 into engagement'with the rails 1, 2,

to prevent movement of the car and when the pulling cable is taut the gripping mem bers are shifted downwardly with respect to the track rails and against the action of the springs 31, 32.

The inner faces of the walls of the casing 18 are oppositely beveled with respect to the gripping members 22, as indicated at 34, and by such construction the gripping members will be shifted to engage the track rails 1, 2, when the-springs 31, 32 are released due to the fact when the pulling member is slack the gripping members 22 of each pair are formed with a corrugated gripping surface 35 which will set up a frictional engagement between said members and the track rails when the springs 31, 32 are released by a slack in the wire The branches 9 of each of the flexible members 8 are connected to the heads of a pair of members 22 by the shackles 36.

What I claim is 1. A safety gripping mechanism for the purpose set forth comprising a pair of casings adapted to be secured exteriorly 0f the sides of the car and depending therefrom, a pair of gripping members carried by each of said casings and adapted to straddle a rail of the track upon which the car travels, each of said gripping members provided with elongated heads pivotally seated intermediate their ends in said casings, said heads further projecting from each end of said casings, coiled springs mounted upon the projecting portions of said heads for shifting said members to engage the rails of the track, and an elevating and lowering member connected with said heads and normally maintaining said members out of engagement with said tracks against the action of the springs of said heads, said members and said casings provided with means whereby said members are forced by the springs into gripping engagement with the track rails when the cable becomes slack.

2. A safety gripping mechanism for the purpose set forth comprising a pair of casings adapted to be secured exteriorly of the sides of the car and depending therefrom, a pair of gripping members carried by each of said casings and adapted to straddle a rail of the track upon which the car travels, each of said gripping members provided With elongated heads pivotally seated intermediate their ends in said casings, said heads further projecting from each end of said casings, coiled springs mounted upon the projecting portions of said heads for shifting said'members to engage the rails of the track, and an elevating and lowering member connected with said heads and normally maintaining said members out of engagement with'said tracks against the action of the springs of said heads, said members and said casings provided with means whereby said members are forced by the springs into gripping engagement with the track rails when the cable becomes slack, each of said members provided with a corrugated gripping surface.

8. A safety gripping mechanism for the purpose set forth comprising a pair of casings secured to and depending from the side Walls of a car exterior-1y thereof, said casings having the inner faces of the side walls beveled and further provided with rests, a pair of oppositely disposed shiftable gripping members arranged within each of said casings and provided with elongated heads pivotally mounted intermediate their ends in seats of their respective casing, said heads further projecting from the ends of their re spective casing, coiled springs mounted upon the projecting portions of said heads for shifting said members, in connection with said beveled inner faces, to engage rails of the track upon which the car travels when said members are released thereby retarding the movement of the car, an elevating and lowering element connected with said heads and normally maintaining said members free of the track rails against the action of the springs, and pulleys journaled in the sides of the car and over which said element passes.

4. A safety gripping mechanism for the purpose set forth comprising a pair of casings secured to and depending from the side walls of a car exteriorly thereof, said casings having the inner faces of the side walls beveled and further provided with seats, a pair of oppositely disposed shiftable gripping members arranged within each of said casings and provided with elongated heads pivotally mounted intermediate their ends in seats of their respective casing, said heads further projecting from the ends of their respective casing, coiled springs mounted upon the projecting portions of said heads for shifting said members, in connection with said beveled inner faces, to engage rails of the track upon which the car travels when said members are released thereby retarding the movement of the car, an elevating and lowering element connected with said heads and normally -maintaining said members free of the track rails against the action of the springs, and pulleys journaled in at an angle with respect to the sides of the car and over which said element passes, each of said members provided with a corrugated gripping face.

5. A safety gripping mechanism for the purpose set forth comprising a pair of casings adapted to be secured exteriorly of the sides of the car and depending therefrom, a pair of gripping members carried by each of said casings and adapted to straddle a rail of the track upon which the car travels, each of said gripping members provided nae ' mediate their ends in said casings, said heads with elongated heads pivotally seated intermediate their ends in said casings, said heads further projecting from each end of said casings, coiled springs mounted upon the projecting portions of said heads for shifting said members to engage the rails of the track, and an elevating and lowering member connected with said heads and normally maintaining said members out of engagement with said tracks against the action of the springs of said heads, said members and said casings provided-withmeans whereby said members are forced by the 7' springs lnto gripping engagement with the track rails when the cable becomes slack, and means interposed between each'pair of gripping members for normally spacing said further projecting from'each end of said casings, coiled springs mounted upon the projecting portions of said heads for shifting said members to engage the rails of the track, and an elevating and lowering member connected with said heads and normally maintaining said members out of engage ment with said tracks against the action of the springs of said heads, said members and said casing provided with means whereby said members are forced by the springs into gripping engagement with the track rails Copies of this patent may be obtained for when the cable becomes slack, and means interposed between each pair of gripping members for normally spacing said members, from each other, and each of saidv 7 members having a flanged lower end.

I 7. A safety gripping mechanism for the purpose set forth comprising a pair of casings secured to and depending from the side walls of a car exteriorly thereof, said casings having the inner faces of the side walls beveled and further provided with seats, a pair of oppositely disposed shiftable gripping members'arrangediwithin each of said casings and provided with elongated heads pivotally mounted intermediate their ends in seats of their respective casing, said heads further projecting from the ends of their respective casings, coiled springs mounted upon the projecting portions of said heads for shifting said members, in connection with said beveled inner faces, to engage rails of the track upon which the car travels when said members are released thereby retarding the movement of the car, an elevating and lowering element connected with said heads and normally maintaining said members free of the track rails against the action of the springs, and pulleys journaled' in the sides of the car and over which said element, passes, and means interposed between each pair of gripping members for normally spacing said members from each other.

In test1mony whereof I affix my signature in presence of two witnesses.

CIRIL FAK.

Witnesses:

Gnonen BURICH, ANTON FAK.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

